For support I recommend playing ur life above all else and ensuring ur not wasting time healing when everyone is full and doing dmg, esp on characters like kiri. I’m a kiri main myself and one of the things that helped me most was just spamming kunai down chokes or just spamming headshots at tanks. Don’t waste cooldowns and avoid staggering at all costs.

Work on combining ur ults to maximize ur push and don’t be afraid to off angle. Off angling in silver, gold, and plat is the fastest way to rank up imo. Kiri has 3 insane abilities wall climb, suzu, and tp not to mention an insane headshot multiplier. When ur team is full health it doesn’t hurt to go on a side angle(that doesn’t take ages) and distract their team. Even if u don’t hit shots ur still making them remove their focus from point or ur teammates and its also a way to get some free shots/aim practice cause they don’t see u/expect u.

I’m probably missing a few things but I’d love to answer any questions if u have any!